enum Foo{
    Bar(int x, char c);
    Baz(int* x, int a, short p);
}

struct Foo{
    char tag;
};

struct FooBar{
    char tag;
    char c;
    // pad 2
    int x;
};

struct FooBaz{
    char tag;
    // pad 1
    short p;
    int a;
    int* x;
};